| JACQUEMIN Frédéric | Drums |
| JACQUEMYN Peter | Acoustic bass |
| JACOB Pierre | Piano |
| JADOT Sébastien | Trombone |
| JEANNE Robert | Tenor/sop. sax |
| JONCKHEER René | Piano |
| JONGHMANS Erik | Tenor sax - Clarinet |
| JORIS Bert | Trumpet/flugelhorn - Composer/arranger |
| JORIS Chris | Percussion - Piano - Composer |
| JUNIOR JAZZ (Eline VAN COILLIE) | Vocals |